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<h1>Fast Fourier Transform
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<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="up.png"></a></h2>
<div class="box"><strong>FFT - DISCRETE FOURIER TRANSFORM AND INVERSE</strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="up.png"></a></h2>
<div class="fragment"><pre class="comment"> FFT - DISCRETE FOURIER TRANSFORM AND INVERSE

 Computes the Discrete Fourier Transform of the input data vector
 using the FFT routine in the TFSA package. The input vector is
 zero-padded if the FFT length is more than the input data
 length. Similarly, the Inverse FFT can be computed by putting the
 Inverse check box on.</pre></div>

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